Andy Murray of Great Britain

LONDON, ENGLAND - AUGUST 01: Andy Murray of Great Britain serves against Marcos Baghdatis of Cyprus during the third round of Men's Singles Tennis on Day 5 of the London 2012 Olympic Games at Wimbledon on August 1, 2012 in London, England. (Credit: Clive Brunskill/Getty Images)

Gotoku Sakai of Japan and Andy Najar of Honduras

COVENTRY, UNITED KINGDOM - AUGUST 1: Gotoku Sakai of Japan battles for the ball against Andy Najar of Honduras during the Men's Football first round Group D Match between Japan and Honduras, on Day 5 of the London 2012 Olympic Games at City of Coventry Stadium on August 1, 2012 in Coventry, England. (Credit: Francis Bompard/Getty Images)

Argnetina's Song Liu

Argnetina's Song Liu returns a shot to Congo's Suraju Saka during a table tennis men's singles preliminary round match of the London 2012 Olympic Games at the Excel centre in London July 28, 2012. (Credit: SAEED KHAN/AFP/GettyImages)

Armenia's Meline Daluzyan

Armenia's Meline Daluzyan competes during the women's 69kg group A weightlifting event at The Excel Centre in London on August 1, 2012 during the London 2012 Olympic Games. (Credit: YURI CORTEZ/AFP/GettyImages)

Australian center Elizabeth Cambage

Australian center Elizabeth Cambage runs with the ball during the women's preliminary round group B basketball match of the London 2012 Olympic Games Australia vs Great Britain on July 28, 2012 at the basketball arena in London. (Credit: TIMOTHY A. CLARY/AFP/GettyImages)

Australia's Stephanie Rice

In a picture taken through a glass window Australia's Stephanie Rice competes in the women's 400m individual medley final swimming event at the London 2012 Olympic Games on July 28, 2012 in London. (Credit: GABRIEL BOUYS/AFP/GettyImages)

Bahamas' Arianna Vanderpool-Wallace

Bahamas' Arianna Vanderpool-Wallace takes off her goggles after the women's 100m freestyle semi-finals swimming event at the London 2012 Olympic Games on August 1, 2012 in London. (Credit: MARTIN BUREAU/AFP/GettyImages)

Brazil's Leandro Guilheiro (white) competes with Latvia's Konstantins Ovchinnikovs (blue)

Brazil's Leandro Guilheiro (white) competes with Latvia's Konstantins Ovchinnikovs (blue) during their men's -81kg judo contest match of the London 2012 Olympic Games on July 31, 2012 at the ExCel arena in London. (Credit: FRANCK FIFE/AFP/GettyImages)

Britain's Michael Jamieson

Britain's Michael Jamieson wams up before the men's 200m breaststroke final swimming event at the London 2012 Olympic Games on August 1, 2012 in London. (Credit: FABRICE COFFRINI/AFP/GettyImages)

China's Jin Chen

China's Jin Chen returns a shot to Przemyslaw Wacha of Poland during their men's single badminton match at the London 2012 Olympic Games in London on July 30, 2012. (Credit: MANAN VATSYAYANA/AFP/GettyImages)

Croatia's Cornelia Molnar

Croatia's Cornelia Molnar serves to North Korea's Kim Jong during a table tennis women's singles preliminary round match of the London 2012 Olympic Games at the Excel centre in London July 28, 2012. (Credit: SAEED KHAN/AFP/GettyImages)

Denmark's leftwing Ann Grete Norgaard

Denmark's leftwing Ann Grete Norgaard reacts after a goal during the women's preliminaries Group A handball match Spain vs Denmark for the London 2012 Olympics Games on August 1, 2012 at the Copper Box hall in London. (Credit: JAVIER SORIANO/AFP/GettyImages)

Germany's gymnast Fabian Hambuchen

Germany's gymnast Fabian Hambuchen competes on the rings during the men's qualification of the artistic gymnastics event of the London Olympic Games on July 28, 2012 at the 02 North Greenwich Arena in London. (Credit: THOMAS COEX/AFP/GettyImages)

Hungary's Daniel Gyurta

Hungary's Daniel Gyurta competes in the men's 200m breaststroke final swimming event at the London 2012 Olympic Games on August 1, 2012 in London. (Credit: FABRICE COFFRINI/AFP/GettyImages)

Iceland's centreback Aron Palmarsson

Iceland's centreback Aron Palmarsson jumps to shoot during the men's preliminaries Group A handball match Tunisia vs Iceland for the London 2012 Olympics Games on July 31, 2012 at the Copper Box hall in London. (Credit: JAVIER SORIANO/AFP/GettyImages)

Mariusz Prudel of Poland

Mariusz Prudel of Poland controls the ball during his men's beach volleyball preliminary phase Pool D match against Jacob Gibb and Sean Rosenthal of the US on The Centre Court Stadium in Horse Guards Parade in London on July 30, 2012, for the London 2012 Olympic Games. (Credit: DANIEL GARCIA/AFP/GettyImages)

Nat Cook of Australia

LONDON, ENGLAND - JULY 28: Nat Cook of Australia dives for the ball against the United States during the Women's Beach Volleyball Preliminary Round on Day 1 of the London 2012 Olympic Games at Horse Guards Parade on July 28, 2012 in London, England. (Photo by Ryan Pierse/Getty Images)

Sophie Herbrecht of France

LONDON, ENGLAND - JULY 28: Sophie Herbrecht of France passes the ball in the Women's Handball preliminaries Group B - Match 6 between Norway and France on Day 1 of the London 2012 Olympic Games at the Copper Box on July 28, 2012 in London, England. (Credit: Jeff Gross/Getty Images)

Michael Phelps of the United States

LONDON, ENGLAND - JULY 28: Michael Phelps of the United States competes in the Final of the Men's 400m Individual Medley on Day One of the London 2012 Olympic Games at the Aquatics Centre on July 28, 2012 in London, England. (Credit: Adam Pretty/Getty Images)

Song Nam Kim of DPR Korea

LONDON, ENGLAND - JULY 28: Song Nam Kim of DPR Korea plays a forehand during his Men's Singles Table Tennis match Ju Lin of Dominican Republic against on Day 1 of the London 2012 Olympic Games at ExCeL on July 28, 2012 in London, England. (Credit: Getty Images/Getty Images)

Megan Rapinoe of USA battles Lady Andrade of Columbia

GLASGOW, SCOTLAND - JULY 28: Megan Rapinoe of USA battles Lady Andrade of Columbia during the Women's Football first round Group G match between United States and Colombia on Day 1 of the London 2012 Olympic Games at Hampden Park on July 28, 2012 in Glasgow, Scotland. (Photo by Stanley Chou/Getty Images)

Jeysson Monroy Varela of Columbia

LONDON, ENGLAND - JULY 30: Jeysson Monroy Varela of Columbia prior to his Men's Light Heavy (81kg) Boxing bout with Ehsan Rouzbahani of Iran on Day 3 of the London 2012 Olympic Games at ExCeL on July 30, 2012 in London, England. (Credit: Scott Heavey/Getty Images)

Ronald Zabala-Goetschel of Ecuador

LONDON, ENGLAND - JULY 30: Ronald Zabala-Goetschel of Ecuador riding Master Rose negotiates a jump in the Eventing Cross Country Equestrian event on Day 3 of the London 2012 Olympic Games at Greenwich Park on July 30, 2012 in London, England. (Credit: Mike Hewitt/Getty Images)

Christopher Wesley of Germany

LONDON, ENGLAND - JULY 30: Christopher Wesley of Germany is challenged by Simon Gougnard of Belgium during the Men's Hockey Match between Belgium and Germany on Day 3 of the London 2012 Olympic Games at the Riverbank Arena on July 30, 2012 in London, England. (Credit: Daniel Berehulak/Getty Images)

Alison Williamson of Great Britain

LONDON, ENGLAND - JULY 31: Alison Williamson of Great Britain competes in her Women's Individual Archery 1/32 Eliminations match against Bishindee Urantungalg of Mongolia during Day 4 of the London 2012 Olympic Games at at Lord's Cricket Ground on July 31, 2012 in London, England. (Credit: Paul Gilham/Getty Images)

Russell Westbrook #7 of United States

LONDON, ENGLAND - JULY 31: Russell Westbrook #7 of United States goes up for a shot in the lane against Tunisia during the Men's Basketball Preliminary Round match on Day 4 of the London 2012 Olympic Games at Basketball Arena on July 31, 2012 in London, England. (Credit: Ezra Shaw/Getty Images)

Lebron James #6 of United States

LONDON, ENGLAND - JULY 31: Lebron James #6 of United States looks on in the Men's Basketball Preliminary Round match between the United States and Tunisia on Day 4 of the London 2012 Olympic Games at Basketball Arena on July 31, 2012 in London, England. (Credit: Ezra Shaw/Getty Images)

Kazushige Ura and Daisaku Takeda of Japan

WINDSOR, ENGLAND - JULY 31: Kazushige Ura and Daisaku Takeda of Japan compete in the Lightweight Men's Double Sculls on Day 4 of the London 2012 Olympic Games at Eton Dorney at Eton Dorney on July 31, 2012 in Windsor, England. (Credit: Michael Steele/Getty Images)

Emma Twigg of New Zealand

WINDSOR, ENGLAND - JULY 31: Emma Twigg of New Zealand competes in the Women's Single Sculls on Day 4 of the London 2012 Olympic Games at Eton Dorney at Eton Dorney on July 31, 2012 in Windsor, England. (Credit: Harry How/Getty Images)

Adam Brown of Great Britain

LONDON, ENGLAND - JULY 31: Adam Brown of Great Britain prepares to compete in the Men's 100m Freestyle heat 6 on Day 4 of the London 2012 Olympic Games at the Aquatics Centre on July 31, 2012 in London, England. (Credit: Adam Pretty/Getty Images)

Tony Martin of German

LONDON, ENGLAND - AUGUST 01: Tony Martin of Germany races to the silver medal in the Men's Individual Time Trial Road Cycling on day 5 of the London 2012 Olympic Games on August 1, 2012 in London, England. (Credit: Christophe Ena - IOPP Pool Getty Images)

Roger Federer of Switzerland

LONDON, ENGLAND - AUGUST 01: Roger Federer of Switzerland returns a shot to Denis Istomin of Uzbekistan during the third round of Men's Singles Tennis on Day 5 of the London 2012 Olympic Games at Wimbledon on August 1, 2012 in London, England. (Credit: Clive Brunskill/Getty Images)

Ruoqi Hui of China

LONDON, ENGLAND - AUGUST 01: Ruoqi Hui #4 of China spikes the ball as Jordan Larson #10 and Christa Harmotto #13 of United States defend during Women's Volleyball on Day 5 of the London 2012 Olympic Games at Earls Court on August 1, 2012 in London, England. (Credit: Elsa/Getty Images)

Krzysztof Maciej Zwarycz of Poland

LONDON, ENGLAND - AUGUST 01: Krzysztof Maciej Zwarycz of Poland reacts while competing in the Men's 77kg Weightlifting on Day 5 of the London 2012 Olympic Games at ExCeL on August 1, 2012 in London, England. (Credit: Laurence Griffiths/Getty Images)

Xiaojun Lu of China

LONDON, ENGLAND - AUGUST 01: Xiaojun Lu of China reacts after setting a world record of 175 in the snatch while competing in the Men's 77kg Weightlifting on Day 5 of the London 2012 Olympic Games at ExCeL on August 1, 2012 in London, England. (Credit: Laurence Griffiths/Getty Images)

Recent Tour de France Winner Bradley Wig

Recent Tour de France winner Bradley Wiggins (R) of Great Britain rides during the men's road cycling race on day 1 of the London 2012 Olympic Games on July 28, 2012 in London. (Credit: BRYN LENNON/AFP/GettyImages)

Russia's Maria Sharapova

Russia's Maria Sharapova watches the ball against Germany's Sabine Lisicki during their women's singles tennis match third round at the 2012 London Olympic Games at the All England Tennis Club in Wimbledon, southwest London, on August 1, 2012. (Credit: MARTIN BERNETTI/AFP/GettyImages)

Serbia's Marko Podrascanin

Serbia's Marko Podrascanin (L) spikes the ball as Bilel Ben Hassine of Tunisia (lower R) and Hichem Kaabi attempt to block during the men's preliminary pool B volleyball match between Serbia and Tunisia in the 2012 London Olympic Games in London on July 31, 2012. (Credit: KIRILL KUDRYAVTSEV/AFP/GettyImages)

Spain's Coach Jorge Duenas de Galarza

Spain's coach Jorge Duenas de Galarza reacts during the women's preliminaries Group A handball match Spain vs Denmark for the London 2012 Olympics Games on August 1, 2012 at the Copper Box hall in London. (Credit: JAVIER SORIANO/AFP/GettyImages)

US Guard Angel McCoughtry

US guard Angel McCoughtry tries to score during the Women's preliminary round group A basketball match of the London 2012 Olympic Games Angola vs USA on July 30, 2012 at the basketball arena in London. USA won 90 to 38. (Credit: MARK RALSTON/AFP/GettyImages)

US gard Angel McCoughtry tries to score during the Women's preliminary round group A basketball match of the London 2012 Olympic Games Angola vs USA on July 30, 2012 at the basketball arena in London. USA won 90 to 38. AFP PHOTO / MARK RALSTON (Photo credit should read MARK RALSTON/AFP/GettyImages)

Argentina's Juan Martin del Potro

Argentina's Juan Martin del Potro returns the ball to Japan's Kei Nishikori during their men's single tennis quarterfinal match at the London 2012 Olympic Games in London on August 2, 2012. (Credit: MARTIN BERNETTI/AFP/GettyImages)

Egypt's Hesham Mesbah (white) competes with Kazakhstan's Timur Bolat

Egypt's Hesham Mesbah (white) competes with Kazakhstan's Timur Bolat (blue) during their men's -90kg judo contest match of the London 2012 Olympic Games on August 1, 2012 at the ExCel arena in London. (Credit: JOHANNES EISELE/AFP/GettyImages)

France's Yannick Borel

France's Yannick Borel celebrates his victory over Ukraine's Dmitriy Karuchenko at the end oftheir Men's epee bout as part of the fencing event of London 2012 Olympic games, on August 1, 2012 at the ExCel centre in London. (Credit: TOSHIFUMI KITAMURA/AFP/GettyImages)

Viktor Ruban of Ukraine

LONDON, ENGLAND - AUGUST 01: Viktor Ruban of Ukraine competes in his Men's Individual Archery 1/16 Eliminations match against Chen Yu-Cheng of Chinese Taipai during the Men's Individual Archery on Day 5 of the London 2012 Olympic Games at Lord's Cricket Ground on August 1, 2012 in London, England. (Credit: Paul Gilham/Getty Images)

Sally Foster of Australia

LONDON, ENGLAND - AUGUST 01: Sally Foster of Australia competes in heat 3 of the Women's 200m Breaststroke on Day 5 of the London 2012 Olympic Games at the Aquatics Centre on August 1, 2012 in London, England. (Credit: Al Bello/Getty Images)

Timofey Mozgov #5 of Russia

LONDON, ENGLAND - AUGUST 02: Timofey Mozgov #5 of Russia receives an arm to the head as he looks to shoot against Tiago Splitter #15 of Brazil in the second half during the Men's Basketball Preliminary Round match on Day 6 of the London 2012 Olympic Games at Basketball Arena on August 2, 2012 in London, England. (Credit: Christian Petersen/Getty Images)

Luka Bozic (L) and Sao Taljat of Slovenia

LONDON, ENGLAND - AUGUST 02: Luka Bozic (L) and Sao Taljat of Slovenia compete during the Men's Canoe Double (C2) Slalom on Day 6 of the London 2012 Olympic Games at Lee Valley White Water Centre on August 2, 2012 in London, England. (Credit: Alexander Hassenstein/Getty Images)

Corinne Maitrejean of France

LONDON, ENGLAND - AUGUST 02: Corinne Maitrejean of France reacts after her contest with Gil Ok Jung of Korea during Women's Foil Team Fencing bronze medal match on Day 6 of the London 2012 Olympic Games at ExCeL on August 2, 2012 in London, England. (Credit: Hannah Johnston/Getty Images)

Denis Buntic #21 of Croatia

LONDON, ENGLAND - AUGUST 02: Denis Buntic #21 of Croatia is defended by Attila Vadkerti #24 of Hungary in the Men's Preliminaries Group B match between Croatia and Hungary on Day 6 of the London 2012 Olympic Games at The Copper Box on August 2, 2012 in London, England. (Credit: Jeff Gross/Getty Images).

South Korea's centreback Jung Jihae

South Korea's centreback Jung Jihae during the women's preliminaries Group A handball match Norway vs South Korea for the London 2012 Olympics Games on August 1, 2012 at the Copper Box hall in London. (Credit: JAVIER SORIANO/AFP/GettyImages)

Spain's Andres Eduardo Mata Perez

Spain's Andres Eduardo Mata Perez competes during the men's 77kg group B weightlifting event, at The Excel Centre in London on August 1, 2012 during the London 2012 Olympic Games. (Credit: YURI CORTEZ/AFP/GettyImages)

Belarus' Victoria Azarenka

Belarus' Victoria Azarenka returns the ball to Germany's Angelique Kerber during their women's single tennis match Quarter Final at the London 2012 Olympic Games in London on August 2, 2012. (Credit: LUIS ACOSTA/AFP/GettyImages)

Belgium's Jasper Aerents

Belgium's Jasper Aerents sticks his tongue out prior to compete in the men's 50m freestyle heats swimming event at the London 2012 Olympic Games on August 2, 2012 in London. (Credit: FABRICE COFFRINI/AFP/GettyImages)

Yong Dae Lee (L) and Jae Sung Chung (R) of Korea

LONDON, ENGLAND - AUGUST 02: Yong Dae Lee (L) and Jae Sung Chung (R) of Korea return against Tontowi Ahmad and Lilyana Natsir of Indonesia in their Men's Doubles Badminton quarter final on day 6 of the London 2012 Olympic Games at Wembley Arena on August 2, 2012 in London, England. (Credit: Michael Regan/Getty Images)

Elizabeth Beisel of the United States

LONDON, ENGLAND - AUGUST 02: Elizabeth Beisel of the United States spits out water after competing in the Women's 200m Backstroke heat 3 on Day 6 of the London 2012 Olympic Games at the Aquatics Centre on August 2, 2012 in London, England. (Credit: Al Bello/Getty Images)

Rhys Howden of Australia

LONDON, ENGLAND - AUGUST 02: Rhys Howden of Australia in action during the Men's Preliminary Round match between Spain and Australia on Day 6 of the London 2012 Olympics at the Water Polo Arena on August 2, 2012 in London, England. (Credit: Bryn Lennon/Getty Images)

Olena Fedorova of the Ukraine

LONDON, ENGLAND - AUGUST 03: Olena Fedorova of the Ukraine competes in the Women's 3m Springboard Diving Preliminary Round on Day 7 of the London 2012 Olympic Games at the Aquatics Centre on August 3, 2012 in London, England. (Credit: Al Bello/Getty Images)

Masaki Ito of Japan

LONDON, ENGLAND - AUGUST 03: Masaki Ito of Japan competes on the Men's Trampoline during Day 7 of the London 2012 Olympic Games at North Greenwich Arena on August 3, 2012 in London, England. (Credit: Ronald Martinez/Getty Images)

Spain's Gedeon Guardiola Villaplan

Spain's pivot Gedeon Guardiola Villaplana jumps to shoot during the men's preliminary Group B handball match Spain vs South Korea for the London 2012 Olympics Games on August 2, 2012 at the Copper Box hall in London. (Credit: JAVIER SORIANO/AFP/GettyImages)

US swimmer Katie Ledecky

US swimmer Katie Ledecky competes in the women's 800m freestyle heats swimming event at the London 2012 Olympic Games on August 2, 2012 in London. (Credit: FABRICE COFFRINI/AFP/GettyImages)